Dark data is the untouched information stored in your systems—up to 55% of all...

https://www.deltabookmarks.win/dark-data-refers-to-the-55-of-stored-information-that-organizations-keep-but

Dark data is the untouched information stored in your systems—up to 55% of all data goes unused. This matters because it racks up costs and creates risk, especially when AI sifts through cluttered files